US20140238527A1 - Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tire - Google Patents
Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tire Download PDFInfo
- Publication number
- US20140238527A1 US20140238527A1 US14/347,836 US201214347836A US2014238527A1 US 20140238527 A1 US20140238527 A1 US 20140238527A1 US 201214347836 A US201214347836 A US 201214347836A US 2014238527 A1 US2014238527 A1 US 2014238527A1
- Authority
- US
- United States
- Prior art keywords
- hook
- anvil
- extracting
- weft
- intended
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/04—Auxiliary apparatus combined with or associated with looms for treating weft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/46—Cutting textile inserts to required shape
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/70—Devices for cutting weft threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/06—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping
- D03D51/08—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping stopping at definite point in weaving cycle, or moving to such point after stopping
- D03D51/085—Extraction of defective weft
Definitions
- the disclosure relates to the manufacture of tires and focuses more specifically on the processing of the reinforcing plies produced from textile threads.
- These plies are formed by sections of threads embedded in rubber and are arranged at a given angle in relation to the circumferential direction of the tire.
- the manufacture of the reinforcing plies takes place on the basis of plies of threads, known as straight-thread plies, in which the continuous threads are arranged side by side, according to a given pitch, in a direction parallel to the longitudinal direction of the ply.
- the threads of the ply are embedded in the rubber, for example by means of a calender.
- the threads of the straight-thread ply may be subjected to pre-treatment in order to favour the adhesion of the rubber to the thread.
- these straight-thread plies include sections of threads, referred to as weft threads, arranged in the direction perpendicular to the longitudinal direction of the straight-thread ply, of which the threads may be considered as warp threads.
- the purpose of the weft threads is to maintain the threads of the straight-thread ply in position during the handling operations of said plies.
- weft threads act against an increase in the spacing pitch of the reinforcing threads in this zone in the course of the conformation operation, the purpose of which is to transform the tire blank from a generally cylindrical shape into a toroidal shape.
- the manufacturers are also committed to reducing this disadvantage by fragmenting and/or by withdrawing the weft threads during a stage preceding the embedding of the reinforcing threads in their rubber matrix.
- publication JP7-34379 describes a system of rotating knives capable of cutting the wefts into sections of a given size, interacting with claws mounted on a rotating disc and intended to hook onto and to extract the sections of wefts.
- Publication JP5-200910 describes a similar system in which the claws may be mounted on an axis executing a rectilinear movement.
- One or a plurality of these devices are thus arranged with regular spacing in the direction transversal to the direction of the straight-thread ply downstream of cutting means capable of dissecting the weft threads in order to extract the wefts prior to the calendering operation, in the course of which the reinforcing threads are embedded in rubber.
- An object of embodiments of the present disclosure to provide a device capable of reducing the disadvantages outlined above.
- the device intended for extracting weft threads comprises a hook capable of gripping a weft thread by performing an alternating movement between a high position and a low position.
- This device is characterized in that the hook engages with a disengageable anvil capable of moving along the path of the hook so that, when the device is in operation,
- the path of the hook is rectilinear.
- the hook may be mounted on a rod supported by a shaft sliding in a conduit arranged in a fixed chassis and driven in an alternating upward and downward movement.
- An anvil that is slidably mounted on the rod supporting the hook, as well as an elastic element situated between the anvil and an abutment arranged on the shaft, so that the anvil is subjected to a force with the aim of bringing said anvil in the direction of the hook, can usefully be proposed.
- a movable pawl mounted on the chassis, said pawl being capable of engaging the anvil mechanically in such a way as to restrain the movement of said anvil during the return movement of the sliding shaft in the upward direction, and being mounted on the chassis by means of an elastic articulation.
- the chassis may usefully include a table intended to receive the straight-thread ply on its upper surface and including an orifice through which the hook moves; this being the case, the travel of the anvil is limited by the lower surface of the table.
- the disclosed embodiments also relate to a machine intended for extracting wefts, comprising one or a plurality of devices intended for extracting according to the embodiment arranged transversely along the direction of movement of a ply made of straight-thread reinforcing threads.
- Cutting elements capable of cutting the weft threads can also be usefully arranged upstream of the devices intended for extracting.
- blowing means oriented in such a way as to generate an air current capable of evacuating the sections of weft once the latter have been released from the clamp formed by the hook and the anvil.
- the embodiments disclosed herein relate to a method for extracting a weft thread in which use is made of a device and a machine having the following characteristics.
- FIGS. 1 to 3 The following description is based on FIGS. 1 to 3 , in which:
- FIG. 1 represents a schematic view in cross section of a device according to a preferred embodiment
- FIG. 2 represents a schematic view of the device
- FIGS. 3 a to 3 j represent simplified schematic views of a device according to an embodiment in the different stages of an operating cycle.
- FIG. 1 A preferred embodiment of a device 7 described herein is illustrated in FIG. 1 .
- FIG. 2 permits the different components to be visualized in three dimensions.
- This device 7 intended for extracting comprises a chassis body 1 on which the different components are arranged.
- a rectilinear supporting shaft 2 moves along an axis XX′ inside a bore provided in the chassis 1 .
- a sleeve 15 serving as a conduit, permits the guiding of the supporting shaft 2 and the reduction of wear phenomena.
- the supporting shaft 2 is driven via its lower part 24 according to an alternating upward and downward movement with the help of a transmission connected to a motor (not illustrated here).
- a rod 22 coaxial to the supporting shaft, is fixed to the motor shaft at one of its extremities and has a hook 21 at its other extremity.
- the hook 21 is thus subjected to the alternating upward and downward movements imparted by the supporting shaft 2 .
- An anvil 3 coaxial to the rod 22 and to the supporting shaft 2 , is slidably mounted on said rod 22 .
- An elastic element in this case a spring 31 , is interposed between the low part 32 of the anvil 3 and an abutment 25 arranged on the movable shaft 2 .
- the head of the anvil 3 under the action of the spring 31 , moves into a position in which it is supported on the hook 21 .
- a pawl 4 is connected to the chassis body 1 by means of an elastic articulation 41 .
- the pawl 4 tilts in the direction of the anvil 3 under the effect of the elastic return forces.
- the free extremity of the pawl includes a catch 43 , the shape of which is adapted to come into mechanical engagement with the anvil 3 .
- the end part of the pawl carries an inclined surface 44 intended to interact with the lateral face 34 of the anvil, as will be explained in detail below.
- a cam 23 is arranged on the supporting shaft 2 , in such a way as to engage with a shoulder 42 provided on the pawl 4 .
- the chassis 1 likewise carries a table 11 intended to receive a straight-thread ply F containing weft threads T and which moves on the upper surface 12 of the table 11 in the direction of the arrow D.
- An orifice 14 is provided in the table at the level of the trajectory of the hook, in such a way as to enable the hook 21 to gain access to the upper part of the ply in order to grip a section of weft thread as it descends once again.
- Blowing means 6 situated beneath the table 11 , are oriented in such a way as to generate an air current capable of evacuating the sections of weft that are released when the hook and the anvil are no longer in contact one with the other.
- the device intended for extracting as described above is intended to be mounted on a machine, preferably situated immediately upstream of the calendering machine.
- the number and the position of the devices 7 intended for extracting are adjusted so that all the wefts may be extracted in the course of the advancement of the ply.
- a splitter (not illustrated here) can usefully be provided downstream of the devices intended for extracting, after having cut and extracted the weft thread, for the purpose of keeping the reinforcing threads separated in order to facilitate the passage of the hook 21 , and to avoid degradation of the reinforcing threads.
- the machine contains a sufficient number of cutting elements 5 , inserted between the devices intended for extracting, to enable the weft threads to be cut upstream of the axis XX′ of the trajectory of the hook.
- FIGS. 3 a to 3 j The object of FIGS. 3 a to 3 j is to illustrate the different positions of the principal moving components of the device.
- FIG. 1 In the interests of making the diagrams easier to understand, reference may usefully be made to FIG. 1 in order to identify the numerical references that are utilized in the description of an operating cycle of the kind contained in the following paragraphs.
- FIG. 3 a represents the device when the hook 21 is in the low position. It should be noted that a section of weft T deriving from the preceding extraction cycle is still trapped between the hook and the anvil.
- the supporting shaft 2 begins its return movement in the upward direction in the direction of the table (see the direction of the arrow), the pawl 4 is in engagement with the anvil 3 and restrains the movement of the anvil.
- the spring 31 is placed in compression.
- the anvil 3 continues to be restrained by the pawl 4 .
- the hook 21 rises up independently of the anvil and releases the section of weft.
- the air current coming from the blowing means 6 evacuates said section towards a receptacle (not illustrated here).
- the cam 23 situated on the supporting shaft 2 begins to engage the shoulder 42 of the pawl 4 .
- the stage illustrated in FIG. 3 c represents the moment in the cycle at which the pawl 4 releases the anvil, which, under the effect of the spring 31 , is propelled in the direction of the table 11 .
- the upper surface 33 of the anvil 3 comes into abutment against the lower surface 13 of the table 11 , as illustrated in FIG. 3 d .
- the cam engages the shoulder 42 completely, and the pawl 4 is maintained in its open position.
- the hook 21 continues to rise and penetrates into the orifice 14 provided in the table 11 .
- FIG. 3 e illustrates the configuration of the device when the supporting shaft 2 is in the high position.
- the cam 23 remains engaged with the shoulder 4 .
- the hook 21 is passed beneath the straight-thread ply F in such a way as to position itself beneath a section of weft T previously cut by the knife 5 .
- the anvil 3 is still in abutment against the lower surface 13 of the table 11 .
- the hook 21 On initiating its descent, as illustrated in FIG. 3 f , the hook 21 carries the section of weft T with it.
- the hook 21 carries the anvil 3 with it on its path, in such a way that this assembly forms a clamp in which the section of weft is trapped between the upper surface 33 of the anvil and the hook 21 .
- the force of compression of the spring 31 maintains these two components ( 33 , 21 ) in contact with one another and prevents the section of weft from escaping.
- FIG. 3 i represents the moment in the cycle at which the catch 43 of the pawl is free to engage the upper surface 33 of the anvil 3 .
- the pawl tilts in the direction of the anvil and the catch 43 connects with the latter.
- the inclination of the terminal part 33 of the pawl and of the anvil 3 are preferably adjusted in such a way that the pawl comes into engagement with the anvil in a position close to the low position of the supporting shaft 2 .
- FIG. 3 j represents the state of the device in the low position, equivalent to that of FIG. 3 a .
- the pawl is in engagement with the anvil 3 .
- the section of weft is still trapped between the anvil and the hook.
- the supporting shaft may then initiate its return movement in the upward direction by reproducing the cycle in the manner described above in order to release the section of weft of the preceding cycle, and to extract a new section of weft.
- the method for extracting a weft thread comprises the stages as illustrated by FIGS. 3 a to 3 j .
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Looms (AREA)
- Woven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- This application is a 371 of PCT/EP2012/069154, filed 27 Sep. 2012, which claims benefit under 35 U.S.C. §119 of the filing date of French patent application 1150916, filed 6 Oct. 2011, the entire contents of which is incorporated herein by reference for all purposes.
- 1. Field
- The disclosure relates to the manufacture of tires and focuses more specifically on the processing of the reinforcing plies produced from textile threads.
- 2. Description of Related Art
- These plies are formed by sections of threads embedded in rubber and are arranged at a given angle in relation to the circumferential direction of the tire.
- In a known manner, the manufacture of the reinforcing plies takes place on the basis of plies of threads, known as straight-thread plies, in which the continuous threads are arranged side by side, according to a given pitch, in a direction parallel to the longitudinal direction of the ply. The threads of the ply are embedded in the rubber, for example by means of a calender.
- The threads of the straight-thread ply may be subjected to pre-treatment in order to favour the adhesion of the rubber to the thread.
- In addition, in a routine manner, these straight-thread plies include sections of threads, referred to as weft threads, arranged in the direction perpendicular to the longitudinal direction of the straight-thread ply, of which the threads may be considered as warp threads. The purpose of the weft threads is to maintain the threads of the straight-thread ply in position during the handling operations of said plies.
- It can be appreciated, however, that the presence of the weft may prove to be inconvenient during subsequent operations in the manufacture of the tire. In effect, when these threads are present in a ply intended to form the carcass-reinforcing ply, they may cause irregularities in the spacing of the reinforcing threads at the level of the crown portion. This can be explained by the fact that the weft threads act against an increase in the spacing pitch of the reinforcing threads in this zone in the course of the conformation operation, the purpose of which is to transform the tire blank from a generally cylindrical shape into a toroidal shape.
- The manufacturers are also committed to reducing this disadvantage by fragmenting and/or by withdrawing the weft threads during a stage preceding the embedding of the reinforcing threads in their rubber matrix.
- Devices intended for this purpose have been developed by the industry. Thus, publication JP7-34379 describes a system of rotating knives capable of cutting the wefts into sections of a given size, interacting with claws mounted on a rotating disc and intended to hook onto and to extract the sections of wefts. Publication JP5-200910 describes a similar system in which the claws may be mounted on an axis executing a rectilinear movement.
- One or a plurality of these devices are thus arranged with regular spacing in the direction transversal to the direction of the straight-thread ply downstream of cutting means capable of dissecting the weft threads in order to extract the wefts prior to the calendering operation, in the course of which the reinforcing threads are embedded in rubber.
- It should be noted, however, that, although these devices permit the removal of the majority of the sections of weft, some sections of weft will remain intertwined in an irregular manner with the reinforcing threads. In addition, on emerging from the calendering operation, these weft residues constitute local thickenings and aggregates with the potential to weaken the bridges of rubber formed between the reinforcing threads.
- An object of embodiments of the present disclosure to provide a device capable of reducing the disadvantages outlined above.
- The device intended for extracting weft threads according to the embodiments disclosed herein comprises a hook capable of gripping a weft thread by performing an alternating movement between a high position and a low position. This device is characterized in that the hook engages with a disengageable anvil capable of moving along the path of the hook so that, when the device is in operation,
-
- the anvil is engaged in contact with the hook during all or part of the descending movement of said hook, thereby forming a clamp capable of holding a section of weft between the hook and the anvil,
- the anvil is disengaged from contact with said hook during the remainder of the travel of the hook, in such a way as to enable the hook to engage a weft thread and to release a section of weft.
- The result of this particular arrangement is that the section of weft thread is gripped in the first instance by the hook. During the descending movement of the hook, the section of weft extracted from the ply is then pinched between the hook and the anvil. As a result of this, the imbalance in the tensions, which arise at the two free extremities of said section and result from rubbing of the weft on the warp threads, no longer causes said section to escape from the hook. Being held firmly between the hook and the anvil, the section of weft may then be extracted completely from the weft threads, and it may be removed from the device after having released the contact between the hook and the anvil.
- According to a preferred embodiment, the path of the hook is rectilinear. The hook may be mounted on a rod supported by a shaft sliding in a conduit arranged in a fixed chassis and driven in an alternating upward and downward movement.
- An anvil that is slidably mounted on the rod supporting the hook, as well as an elastic element situated between the anvil and an abutment arranged on the shaft, so that the anvil is subjected to a force with the aim of bringing said anvil in the direction of the hook, can usefully be proposed.
- It is likewise possible to provide a movable pawl mounted on the chassis, said pawl being capable of engaging the anvil mechanically in such a way as to restrain the movement of said anvil during the return movement of the sliding shaft in the upward direction, and being mounted on the chassis by means of an elastic articulation.
- For the purpose of actuating the pawl, it is possible to provide a cam arranged on the supporting shaft which engages with a shoulder located on the pawl so that:
-
- the pawl is released from its mechanical engagement with the anvil when the cam moves away from the body of the chassis,
- the pawl engages mechanically on the anvil under the effect of the elastic articulation when the cam approaches the chassis body.
- With a view to the geometrical regulation of the position of the straight-thread ply in relation to the hook, the chassis may usefully include a table intended to receive the straight-thread ply on its upper surface and including an orifice through which the hook moves; this being the case, the travel of the anvil is limited by the lower surface of the table.
- The disclosed embodiments also relate to a machine intended for extracting wefts, comprising one or a plurality of devices intended for extracting according to the embodiment arranged transversely along the direction of movement of a ply made of straight-thread reinforcing threads.
- Cutting elements capable of cutting the weft threads can also be usefully arranged upstream of the devices intended for extracting.
- It may also be advantageous to provide blowing means oriented in such a way as to generate an air current capable of evacuating the sections of weft once the latter have been released from the clamp formed by the hook and the anvil.
- In order to facilitate the passage of the hook, it may be advantageous to arrange a splitter downstream of each of the devices intended for extracting that is capable of separating the reinforcing threads.
- Finally, the embodiments disclosed herein relate to a method for extracting a weft thread in which use is made of a device and a machine having the following characteristics.
- The following description is based on
FIGS. 1 to 3 , in which: -
FIG. 1 represents a schematic view in cross section of a device according to a preferred embodiment, -
FIG. 2 represents a schematic view of the device, -
FIGS. 3 a to 3 j represent simplified schematic views of a device according to an embodiment in the different stages of an operating cycle. - A preferred embodiment of a
device 7 described herein is illustrated inFIG. 1 .FIG. 2 permits the different components to be visualized in three dimensions. - This
device 7 intended for extracting comprises a chassis body 1 on which the different components are arranged. A rectilinear supportingshaft 2 moves along an axis XX′ inside a bore provided in the chassis 1. Asleeve 15, serving as a conduit, permits the guiding of the supportingshaft 2 and the reduction of wear phenomena. The supportingshaft 2 is driven via itslower part 24 according to an alternating upward and downward movement with the help of a transmission connected to a motor (not illustrated here). - A
rod 22, coaxial to the supporting shaft, is fixed to the motor shaft at one of its extremities and has ahook 21 at its other extremity. Thehook 21 is thus subjected to the alternating upward and downward movements imparted by the supportingshaft 2. - An
anvil 3, coaxial to therod 22 and to the supportingshaft 2, is slidably mounted on saidrod 22. An elastic element, in this case aspring 31, is interposed between thelow part 32 of theanvil 3 and anabutment 25 arranged on themovable shaft 2. The head of theanvil 3, under the action of thespring 31, moves into a position in which it is supported on thehook 21. - A pawl 4 is connected to the chassis body 1 by means of an
elastic articulation 41. The pawl 4 tilts in the direction of theanvil 3 under the effect of the elastic return forces. The free extremity of the pawl includes acatch 43, the shape of which is adapted to come into mechanical engagement with theanvil 3. The end part of the pawl carries an inclined surface 44 intended to interact with thelateral face 34 of the anvil, as will be explained in detail below. - A
cam 23 is arranged on the supportingshaft 2, in such a way as to engage with ashoulder 42 provided on the pawl 4. Thus, when thecam 23 engages with saidshoulder 42, the pawl 4 is forced to dissociate itself from the anvil and to release the movement of said anvil in the direction of the hook. - The chassis 1 likewise carries a table 11 intended to receive a straight-thread ply F containing weft threads T and which moves on the
upper surface 12 of the table 11 in the direction of the arrow D. - An
orifice 14 is provided in the table at the level of the trajectory of the hook, in such a way as to enable thehook 21 to gain access to the upper part of the ply in order to grip a section of weft thread as it descends once again. - Blowing means 6, situated beneath the table 11, are oriented in such a way as to generate an air current capable of evacuating the sections of weft that are released when the hook and the anvil are no longer in contact one with the other.
- The device intended for extracting as described above is intended to be mounted on a machine, preferably situated immediately upstream of the calendering machine.
- As a function of the width of the straight-thread ply, the number and the position of the
devices 7 intended for extracting are adjusted so that all the wefts may be extracted in the course of the advancement of the ply. - A splitter (not illustrated here) can usefully be provided downstream of the devices intended for extracting, after having cut and extracted the weft thread, for the purpose of keeping the reinforcing threads separated in order to facilitate the passage of the
hook 21, and to avoid degradation of the reinforcing threads. - The machine contains a sufficient number of cutting elements 5, inserted between the devices intended for extracting, to enable the weft threads to be cut upstream of the axis XX′ of the trajectory of the hook.
- It should be noted here that, the more the number of devices intended for extracting is reduced, the more the length of the sections of weft is increased. It follows that the course of the hook must be lengthened in order to permit the complete extraction of said section, to the detriment of the cycle time of the device intended for extracting and, as a result, the rate of advancement of the straight-thread ply.
- The object of
FIGS. 3 a to 3 j is to illustrate the different positions of the principal moving components of the device. In the interests of making the diagrams easier to understand, reference may usefully be made toFIG. 1 in order to identify the numerical references that are utilized in the description of an operating cycle of the kind contained in the following paragraphs. -
FIG. 3 a represents the device when thehook 21 is in the low position. It should be noted that a section of weft T deriving from the preceding extraction cycle is still trapped between the hook and the anvil. When the supportingshaft 2 begins its return movement in the upward direction in the direction of the table (see the direction of the arrow), the pawl 4 is in engagement with theanvil 3 and restrains the movement of the anvil. Thespring 31 is placed in compression. - As it continues on its course in the direction of the return movement in the upward direction, as illustrated in
FIG. 3 b, theanvil 3 continues to be restrained by the pawl 4. Thehook 21 rises up independently of the anvil and releases the section of weft. The air current coming from the blowing means 6 evacuates said section towards a receptacle (not illustrated here). Thecam 23 situated on the supportingshaft 2 begins to engage theshoulder 42 of the pawl 4. - The stage illustrated in
FIG. 3 c represents the moment in the cycle at which the pawl 4 releases the anvil, which, under the effect of thespring 31, is propelled in the direction of the table 11. - Once the anvil has been released, the
upper surface 33 of theanvil 3 comes into abutment against thelower surface 13 of the table 11, as illustrated inFIG. 3 d. The cam engages theshoulder 42 completely, and the pawl 4 is maintained in its open position. Thehook 21 continues to rise and penetrates into theorifice 14 provided in the table 11. -
FIG. 3 e illustrates the configuration of the device when the supportingshaft 2 is in the high position. Thecam 23 remains engaged with the shoulder 4. Thehook 21 is passed beneath the straight-thread ply F in such a way as to position itself beneath a section of weft T previously cut by the knife 5. Theanvil 3 is still in abutment against thelower surface 13 of the table 11. - On initiating its descent, as illustrated in
FIG. 3 f, thehook 21 carries the section of weft T with it. - As it continues on its descent in the direction of the chassis, as illustrated in
FIG. 3 g, thehook 21 carries theanvil 3 with it on its path, in such a way that this assembly forms a clamp in which the section of weft is trapped between theupper surface 33 of the anvil and thehook 21. The force of compression of thespring 31 maintains these two components (33, 21) in contact with one another and prevents the section of weft from escaping. - The continuing descent of the supporting shaft brings the anvil into contact with the end part 44 of the pawl 4. The
cam 23 then begins to disengage from theshoulder 42 with reference toFIG. 3 h. The section of weft remains firmly held between the hook and the anvil. -
FIG. 3 i represents the moment in the cycle at which thecatch 43 of the pawl is free to engage theupper surface 33 of theanvil 3. - Under the effect of the
elastic articulation 41, the pawl tilts in the direction of the anvil and thecatch 43 connects with the latter. The inclination of theterminal part 33 of the pawl and of theanvil 3 are preferably adjusted in such a way that the pawl comes into engagement with the anvil in a position close to the low position of the supportingshaft 2. -
FIG. 3 j represents the state of the device in the low position, equivalent to that ofFIG. 3 a. The pawl is in engagement with theanvil 3. The section of weft is still trapped between the anvil and the hook. - The supporting shaft may then initiate its return movement in the upward direction by reproducing the cycle in the manner described above in order to release the section of weft of the preceding cycle, and to extract a new section of weft.
- The method for extracting a weft thread, in which use is made of a device of the kind described above, comprises the stages as illustrated by
FIGS. 3 a to 3 j. - After reading the above, a person skilled in the art can easily adjust the paths and the respective positions of the different moving components in relation to one another in order to achieve an equivalent result.
- It is also possible, by way of example, to adapt the device by modifying the axial position of the
cam 23 or, alternatively, by modifying the length of theshoulder 42, in order to increase or reduce the path over which thehook 21 returns in the upward direction while the anvil is retained by the pawl 4. - It goes without saying that the embodiment described above is not exclusive, and that it is possible to achieve equivalent functions by modifying the shape or the position of certain components.
- Thus, by way of example, it is entirely possible to substitute a pawl having rectilinear displacement for the pawl having rotating displacement, and to modify the shape and the point of attachment between the pawl and the anvil.
- Similarly, a device containing rotating hooks interacting with an anvil during the extraction of the weft thread, and capable of disengagement for the rest of the trajectory of the hook, would likewise come within the scope of the invention.
Claims (15)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1159016A FR2981091B1 (en) | 2011-10-06 | 2011-10-06 | DEVICE AND METHOD FOR EXTRACTING FRAMES IN A REINFORCING PATCH FOR THE MANUFACTURE OF A TIRE |
FR1159016 | 2011-10-06 | ||
PCT/EP2012/069154 WO2013050298A1 (en) | 2011-10-06 | 2012-09-27 | Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tyre |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140238527A1 true US20140238527A1 (en) | 2014-08-28 |
US9115447B2 US9115447B2 (en) | 2015-08-25 |
Family
ID=46924478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/347,836 Active US9115447B2 (en) | 2011-10-06 | 2012-09-27 | Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tire |
Country Status (5)
Country | Link |
---|---|
US (1) | US9115447B2 (en) |
EP (1) | EP2751322B1 (en) |
CN (1) | CN103857839B (en) |
FR (1) | FR2981091B1 (en) |
WO (1) | WO2013050298A1 (en) |
Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3727647A (en) * | 1971-02-12 | 1973-04-17 | Lebocey Industrie | Weft thread selecting and handling means for gripper shuttle loom |
US3885599A (en) * | 1971-11-23 | 1975-05-27 | Carrington Viyella Limited | Shuttleless weaving looms |
US3996971A (en) * | 1974-10-03 | 1976-12-14 | Bonas Machine Company Limited | Needle loom and method for producing knitted articles |
US4062382A (en) * | 1975-09-24 | 1977-12-13 | Ruti Machinery Works Ltd. | Extending carrier for looms with removal of the filling yarn from stationary bobbins |
US4230158A (en) * | 1977-11-07 | 1980-10-28 | Sulzer Brothers Ltd. | Cleaning means for a weaving machine |
US4502512A (en) * | 1982-07-21 | 1985-03-05 | Seisakusho Kabushiki Kaisha Toyoda Jidoshokki | Method for treating a weft yarn upon stoppage of a shuttleless loom and device for effecting the same |
US4858656A (en) * | 1986-01-27 | 1989-08-22 | Tsudakoma Kogyo Kabushiki Kaisha | Apparatus for removing a faulty weft on a jet loom |
US4898214A (en) * | 1987-09-11 | 1990-02-06 | Picanol N. V. | Method and apparatus for removing an improperly inserted weft thread from an air-jet loom |
US4938268A (en) * | 1987-05-20 | 1990-07-03 | Picanol N.V. | Defective weft thread removal for an as-spun weft thread supply |
US4967803A (en) * | 1988-02-25 | 1990-11-06 | Zvs-Vyzkumnevyvojovy Ustav Koncernova Ucelova Organizace | Defective weft removal with unseparated weft lengths |
US4974640A (en) * | 1988-03-10 | 1990-12-04 | Picanol N.V. | Method for removing a loose incorrect piece of weft thread from the shed on weaving machines |
US5060699A (en) * | 1989-06-27 | 1991-10-29 | Elitex Liberec | Device for automatic removal of mispicked weft |
US5199468A (en) * | 1990-06-21 | 1993-04-06 | Sulzer Brothers Limited | Weft yarn clearing device |
US5209271A (en) * | 1990-12-28 | 1993-05-11 | Tsudakoma Corporation | Mispicked weft removing method |
US5246037A (en) * | 1991-06-04 | 1993-09-21 | Sulzer Brothers Limited | Clearing mispicks in rapier looms |
US5335700A (en) * | 1992-03-24 | 1994-08-09 | Nissan Motor Co., Ltd. | Weft picking system for a fluid jet loom including a roller type traction device |
US5950684A (en) * | 1995-06-02 | 1999-09-14 | Sulzer Rueti Ag | Removal of a weft thread in a series shed weaving machine |
US6014797A (en) * | 1997-06-16 | 2000-01-18 | Jwi Ltd. | Method and apparatus for unravelling threads |
US6136014A (en) * | 1998-09-01 | 2000-10-24 | Vivant Medical, Inc. | Percutaneous tissue removal device |
US6213161B1 (en) * | 1998-12-24 | 2001-04-10 | SULZER RüTI AG | Holder apparatus for weft thread in a series shed weaving machine |
US20030200635A1 (en) * | 2002-04-24 | 2003-10-30 | Astenjohnson, Inc. | Apparatus for preparing a fabric for seaming |
US7168456B1 (en) * | 2005-10-26 | 2007-01-30 | North Rocky Robot Technology, Inc. (Nortec) | Method and apparatus to remove yarns from the fringes of an industrial textile |
US20080000541A1 (en) * | 2006-06-28 | 2008-01-03 | Wis Seaming Equipment, Inc. | Method and apparatus for removing weft threads from the edge of a fabric |
US20090158575A1 (en) * | 2007-12-21 | 2009-06-25 | William Dudley Currie | Apparatus and method for assembling, disassembling and storing a tire building core |
US20090249597A1 (en) * | 2005-12-16 | 2009-10-08 | Toyo Tire & Rubber Co., Ltd. | Method and apparatus of removing weft of cord fabric for topping sheet |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3236896B2 (en) * | 1992-01-28 | 2001-12-10 | 東洋ゴム工業株式会社 | Weft removal method for blind fabric |
JPH05200910A (en) * | 1992-01-29 | 1993-08-10 | Toyo Tire & Rubber Co Ltd | Removal of weft from tire fabric for topping sheet |
JP3427219B2 (en) | 1993-07-16 | 2003-07-14 | 東洋ゴム工業株式会社 | Weft removal device of blind fabric for topping sheet |
DE10330958A1 (en) * | 2003-07-08 | 2005-02-03 | Wangner Finckh Gmbh & Co. Kg | Apparatus and method for removing a plurality of parallel threads from a fabric |
-
2011
- 2011-10-06 FR FR1159016A patent/FR2981091B1/en not_active Expired - Fee Related
-
2012
- 2012-09-27 US US14/347,836 patent/US9115447B2/en active Active
- 2012-09-27 CN CN201280049053.1A patent/CN103857839B/en active Active
- 2012-09-27 EP EP12762641.4A patent/EP2751322B1/en active Active
- 2012-09-27 WO PCT/EP2012/069154 patent/WO2013050298A1/en active Application Filing
Patent Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3727647A (en) * | 1971-02-12 | 1973-04-17 | Lebocey Industrie | Weft thread selecting and handling means for gripper shuttle loom |
US3885599A (en) * | 1971-11-23 | 1975-05-27 | Carrington Viyella Limited | Shuttleless weaving looms |
US3996971A (en) * | 1974-10-03 | 1976-12-14 | Bonas Machine Company Limited | Needle loom and method for producing knitted articles |
US4062382A (en) * | 1975-09-24 | 1977-12-13 | Ruti Machinery Works Ltd. | Extending carrier for looms with removal of the filling yarn from stationary bobbins |
US4230158A (en) * | 1977-11-07 | 1980-10-28 | Sulzer Brothers Ltd. | Cleaning means for a weaving machine |
US4502512A (en) * | 1982-07-21 | 1985-03-05 | Seisakusho Kabushiki Kaisha Toyoda Jidoshokki | Method for treating a weft yarn upon stoppage of a shuttleless loom and device for effecting the same |
US4858656A (en) * | 1986-01-27 | 1989-08-22 | Tsudakoma Kogyo Kabushiki Kaisha | Apparatus for removing a faulty weft on a jet loom |
US4938268A (en) * | 1987-05-20 | 1990-07-03 | Picanol N.V. | Defective weft thread removal for an as-spun weft thread supply |
US4898214A (en) * | 1987-09-11 | 1990-02-06 | Picanol N. V. | Method and apparatus for removing an improperly inserted weft thread from an air-jet loom |
US4967803A (en) * | 1988-02-25 | 1990-11-06 | Zvs-Vyzkumnevyvojovy Ustav Koncernova Ucelova Organizace | Defective weft removal with unseparated weft lengths |
US4974640A (en) * | 1988-03-10 | 1990-12-04 | Picanol N.V. | Method for removing a loose incorrect piece of weft thread from the shed on weaving machines |
US5060699A (en) * | 1989-06-27 | 1991-10-29 | Elitex Liberec | Device for automatic removal of mispicked weft |
US5199468A (en) * | 1990-06-21 | 1993-04-06 | Sulzer Brothers Limited | Weft yarn clearing device |
US5209271A (en) * | 1990-12-28 | 1993-05-11 | Tsudakoma Corporation | Mispicked weft removing method |
US5246037A (en) * | 1991-06-04 | 1993-09-21 | Sulzer Brothers Limited | Clearing mispicks in rapier looms |
US5335700A (en) * | 1992-03-24 | 1994-08-09 | Nissan Motor Co., Ltd. | Weft picking system for a fluid jet loom including a roller type traction device |
US5950684A (en) * | 1995-06-02 | 1999-09-14 | Sulzer Rueti Ag | Removal of a weft thread in a series shed weaving machine |
US6014797A (en) * | 1997-06-16 | 2000-01-18 | Jwi Ltd. | Method and apparatus for unravelling threads |
US6136014A (en) * | 1998-09-01 | 2000-10-24 | Vivant Medical, Inc. | Percutaneous tissue removal device |
US6213161B1 (en) * | 1998-12-24 | 2001-04-10 | SULZER RüTI AG | Holder apparatus for weft thread in a series shed weaving machine |
US20030200635A1 (en) * | 2002-04-24 | 2003-10-30 | Astenjohnson, Inc. | Apparatus for preparing a fabric for seaming |
US7168456B1 (en) * | 2005-10-26 | 2007-01-30 | North Rocky Robot Technology, Inc. (Nortec) | Method and apparatus to remove yarns from the fringes of an industrial textile |
US20090249597A1 (en) * | 2005-12-16 | 2009-10-08 | Toyo Tire & Rubber Co., Ltd. | Method and apparatus of removing weft of cord fabric for topping sheet |
US20080000541A1 (en) * | 2006-06-28 | 2008-01-03 | Wis Seaming Equipment, Inc. | Method and apparatus for removing weft threads from the edge of a fabric |
US20090158575A1 (en) * | 2007-12-21 | 2009-06-25 | William Dudley Currie | Apparatus and method for assembling, disassembling and storing a tire building core |
Also Published As
Publication number | Publication date |
---|---|
EP2751322A1 (en) | 2014-07-09 |
EP2751322B1 (en) | 2015-06-03 |
CN103857839A (en) | 2014-06-11 |
FR2981091B1 (en) | 2013-12-20 |
WO2013050298A1 (en) | 2013-04-11 |
CN103857839B (en) | 2015-11-25 |
FR2981091A1 (en) | 2013-04-12 |
US9115447B2 (en) | 2015-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106170351B (en) | Instrument for fixing bundle lock ring | |
US8225701B2 (en) | Tyre segmenting device | |
US7913602B2 (en) | Method and apparatus for cutting a ribbon of rubber-coated fabric | |
US20110314982A1 (en) | Sheet cutter and belt processing tool | |
US10051802B2 (en) | Apparatus and method for isolating bast bark and wood body from a bast plant stem | |
US9115447B2 (en) | Device and method for extracting wefts in a reinforcing ply intended for the manufacture of a tire | |
EP3225576A1 (en) | Apparatus for capturing the yarn end of a bobbin | |
CN107097293B (en) | One kind closing tail zipper automatic chain-shearing machine | |
CN204489260U (en) | Bottle material safety hand grab | |
CN204135915U (en) | Packing box pressing cap, Glan hang fixing pincers | |
JP6747903B2 (en) | Sheet bundle dividing device | |
WO2017177657A1 (en) | Spring type weft catcher | |
CN103708317A (en) | Elevator safety device | |
DK176466B1 (en) | Procedure for automatic ham cutting and apparatus for automatic ham cutting | |
JPS6269851A (en) | Method and apparatus for automatically taking out cut end ofwarp yarn | |
CN203878392U (en) | Needle detector having pressure bars | |
CN104290913B (en) | A kind of time delay separating mechanism of unmanned plane and parachute | |
US809512A (en) | Machine for cutting and pressing canisters, &c. | |
CN110178603B (en) | Evergreen tree branch snow shaking-off machine | |
US1602406A (en) | Cork and stopper puller | |
CN105908289A (en) | A device for controlling a splicing process | |
CN208868169U (en) | A kind of rope-climbed robot structure | |
CN205537594U (en) | Separation device of extensometer and steel strand wires | |
US598732A (en) | Device for separating and removing threads from woven fabrics | |
JP7149017B2 (en) | Yarn roll recycling equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, FR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AUBAREDE, FRANCIS;HOMBERT, CHRISTOPHE;REEL/FRAME:033304/0896 Effective date: 20140528 Owner name: MICHELIN RECHERCHE ET TECHNIQUE S.A., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AUBAREDE, FRANCIS;HOMBERT, CHRISTOPHE;REEL/FRAME:033304/0896 Effective date: 20140528 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
|
AS | Assignment |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MICHELIN RECHERCHE ET TECHNIQUE S.A.;REEL/FRAME:052863/0624 Effective date: 20170101 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |